CN106824974A - The system and method for processing house refuse - Google Patents

The system and method for processing house refuse Download PDF

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Publication number
CN106824974A
CN106824974A CN201611153349.4A CN201611153349A CN106824974A CN 106824974 A CN106824974 A CN 106824974A CN 201611153349 A CN201611153349 A CN 201611153349A CN 106824974 A CN106824974 A CN 106824974A
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CN
China
Prior art keywords
gas
gasification
pyrolysis
outlet
entrance
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Pending
Application number
CN201611153349.4A
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Chinese (zh)
Inventor
任浩华
王惠惠
蔡先明
刘璐
赵月晶
肖磊
吴道洪
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Beijing Shenwu Environmental and Energy Technology Co Ltd
Original Assignee
Beijing Shenwu Environmental and Energy Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Beijing Shenwu Environmental and Energy Technology Co Ltd filed Critical Beijing Shenwu Environmental and Energy Technology Co Ltd
Priority to CN201611153349.4A priority Critical patent/CN106824974A/en
Publication of CN106824974A publication Critical patent/CN106824974A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
    • C10J3/60—Processes
    • C10J3/64—Processes with decomposition of the distillation products
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/002—Removal of contaminants
    • C10K1/003—Removal of contaminants of acid contaminants, e.g. acid gas removal
    • C10K1/005—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0953—Gasifying agents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
    • C10J2300/1612—CO2-separation and sequestration, i.e. long time storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/20—Waste processing or separation

Abstract

The invention discloses the system and method for the treatment of house refuse, wherein, system includes：Pretreatment unit, there is house refuse entrance, organic waste outlet and inorganic refuse to export for it；Pyrolysis installation, it has organic waste entrance, high temperature pyrolysis oil gas vent, pyrolytic carbon outlet and pyrolysis offgas outlet；Gasification installation, it has pyrolytic carbon particle entrance, the outlet of gasification gas and gasification solid discharge；First energy-conservation deacidifying device, gasification gas is exported after it has gasification gas entrance and cooling depickling；Gasification gas clean unit, it has gasification gas entrance and the outlet of purification gasification gas after cooling depickling；First collecting carbonic anhydride unit, there is the first gas inlet and high heating value gasification gas to export for it；Generator unit, there are fuel inlet and combustion tail gas to export for it.Minimizing, the recycling treatment of house refuse can be realized using the system, while can be by greenhouse gases CO2Recycling, is particularly well-suited to Technique Popularizing and large-scale production.

Description

The system and method for processing house refuse
Technical field
The present invention relates to derived energy chemical field, specifically, the system and method the present invention relates to process house refuse.
Background technology
With it is economical develop rapidly, the continuous growth of population and the increasingly raising of living standards of the people, China's life The yield of rubbish is also sharply increased, current about 200,000,000 tons of yield of Municipal Solid Waste in China year, and annual also left with 10% Right speed increases, and very big burden is caused to environment, there is 2/3 predicament for facing " garbage-surrounded city " in national big city.
The conventional landfill of current garbage disposal, composting mode have been absorbed in and have taken at a discount tired of a large amount of lands used, composting production Border, and the mode of incineration treatment of garbage cannot break away from the problem of bioxin pollution all the time, and substantial amounts of flying dust is produced, flying dust Treatment can not show a candle to people's will, as link the weakest in consumer waste incineration overall process Environmental capacity and risk management.
With expanding economy, carbon emission reduction has turned into the problem of concern.As domestic garbage pyrolysis treatment technology, realizing Also substantial amounts of CO is generated while domestic garbage resource2。CO2It is both cause the greenhouse gases of global warming main One of composition, the contribution to greenhouse effects reaches 55%, is again a kind of valuable resource.At present, CO2It is widely used in food The fields such as fresh-keeping, oil recovery business, gas shielded arc welding and chemical industry synthesis, and achieve good economic benefit.But with CO2Increase Production capacity is compared, the annual CO for being used to produce consumption2Amount only accounts for a small part of total output, substantial amounts of CO2Cannot be fully used And be discharged into air, aggravate greenhouse effects, restrict the key factor of Sustainable Development of Enterprises.No matter from resource or the energy For angle, more CO are developed2All it is imperative using technology.
Thus, the means of existing treatment house refuse still have much room for improvement.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, of the invention One purpose is the system and method for proposing treatment house refuse.Using the system can realize house refuse minimizing, Recycling treatment, while can be by greenhouse gases CO2Recycling, is particularly well-suited to Technique Popularizing and large-scale production.
In the first aspect of the present invention, the present invention proposes a kind of system for processing house refuse.Reality of the invention Example is applied, the system includes：There is pretreatment unit, the pretreatment unit house refuse entrance, organic waste to export and inorganic Garbage outlet；Pyrolysis installation, the pyrolysis installation have organic waste entrance, high temperature pyrolysis oil gas vent, pyrolytic carbon outlet and Pyrolysis offgas outlet, the organic waste entrance is connected with organic waste outlet；Breaker, the breaker has Pyrolytic carbon entrance and pyrolytic carbon particle outlet, the pyrolytic carbon entrance are connected with pyrolytic carbon outlet；Gasification installation, the gas Makeup is put with pyrolytic carbon particle entrance, steam entry, the outlet of gasification gas and gasification solid discharge, and the pyrolytic carbon particle enters Mouth is connected with the pyrolytic carbon particle outlet；There is first energy-conservation deacidifying device, the first energy-conservation deacidifying device gasification gas to enter The gas that gasifies after mouth and cooling depickling is exported, and the gas entrance that gasifies is connected with the gasification gas outlet；Gasification gas clean unit, institute Stating gasification gas clean unit has gasification gas entrance and the outlet of purification gasification gas after cooling depickling, and gasify gas after the cooling depickling Entrance is connected with gas outlet of gasifying after the cooling depickling；First collecting carbonic anhydride unit, first collecting carbonic anhydride Unit has the gasification gas outlet of the first gas inlet, the first high-purity carbon dioxide gas vent and high heating value, first tail gas Entrance is connected with purification gasification gas outlet；There are generator unit, the generator unit fuel inlet and combustion tail gas to export, The fuel inlet is connected with high heating value gasification gas outlet.
Thus, the system for the treatment of house refuse according to embodiments of the present invention by the way that house refuse is pre-processed after supply to Pyrolysis installation carries out pyrolysis processing, to obtain high temperature pyrolysis oil gas, pyrolytic carbon and pyrolysis tail gas；Wherein, pyrolytic carbon is through broken After supply to gasification installation and carry out gasification process, obtain the gas that gasifies；And then by the first energy-conservation deacidifying device, the gasification to obtaining Gas carries out heat exchange and depickling treatment, and further purified treatment is carried out in gasification gas clean unit through the gasification gas after depickling of lowering the temperature, It is purified gasification gas；And then, purification gasification gas is supplied into the first collecting carbonic anhydride unit, and to carbon dioxide gas therein Body is trapped, to obtain high heating value gasification gas；Then high heating value gasification gas is supplied to generator unit as fuel gas Row combustion power generation.Thus, embodiments in accordance with the present invention, the system is gasified by the pyrolytic carbon for obtaining domestic garbage pyrolysis To gasification gas, after gasification gas is purified, its calorific value is improved by removing the carbon dioxide in purification gasification gas, and then using high Calorific value gasification gas is generated electricity, it is achieved thereby that to the recycling of low heat value pyrolytic carbon, and significantly reduce dioxy Change the discharge of carbon gas, with environmental benefit and economic benefit higher, be particularly well-suited to Technique Popularizing and large-scale production.
In addition, the system for the treatment of house refuse according to the above embodiment of the present invention can also have following additional technology Feature：
In some embodiments of the invention, the system of the treatment house refuse is further included：Second energy-conservation depickling Device, the second energy-conservation deacidifying device is pyrolyzed oil gas vent, the height after having high temperature pyrolysis oil gas entrance and cooling depickling Warm solution oil gas entrance is connected with the high temperature pyrolysis oil gas vent；Purifier, after the purifier has cooling depickling Pyrolysis oil gas entrance, pyrolysis gas outlet and pyrolysis oil export, are pyrolyzed oil gas entrance and the cooling depickling after the cooling depickling Pyrolysis oil gas vent is connected afterwards, and the pyrolysis gas outlet is connected with the gasification installation, pyrolysis oil export and the generating Unit is connected.Thus, it is possible to pass through the high temperature pyrolysis oil gas that the second energy-conservation deacidifying device produces domestic garbage pyrolysis be changed Heat and depickling treatment, oil gas is pyrolyzed after obtaining cooling depickling, and being pyrolyzed oil gas after purified treatment, after cooling depickling is separated into heat Vent one's spleen and pyrolysis oil；Wherein, pyrolysis gas enter gasification installation as gasifying agent, and pyrolytic carbon is converted into gasification gas, and pyrolysis gas As fuel combustion power generation is carried out into generator unit.
In some embodiments of the invention, the system of the treatment house refuse is further included：Second carbon dioxide Capture unit, the second collecting carbonic anhydride unit has the second gas inlet and the second high-purity carbon dioxide gas vent, Second gas inlet is connected with the pyrolysis offgas outlet and combustion tail gas outlet respectively, second high-purity dioxy Change carbon gas vent to be connected with the second energy-conservation deacidifying device, the second energy-conservation deacidifying device also has two after the second preheating Carbon oxide outlet, carbon dioxide outlet is connected with the gasification installation after second preheating.Thus, it is possible to pass through the second dioxy In the combustion tail gas that combustion power generation is produced in the pyrolysis tail gas and generator unit that are produced in change carbon capture unit trapping pyrolysis installation Carbon dioxide, and then the carbon dioxide is supplied to the second energy-conservation deacidifying device, and using in pyrolysis installation To the heat of high temperature pyrolysis oil gas preheated, and then, it is preheated after carbon dioxide enter as gasifying agent and gasify Device, gasification gas is converted into by the pyrolytic carbon in gasification installation.
In some embodiments of the invention, the high heating value gasification gas outlet is connected with the pyrolysis installation.Thus, may be used To be used for pyrolysis installation as fuel gas by the use of the high heating value gasification gas obtained in the first collecting carbonic anhydride unit, so as to drop The energy consumption of low pyrolysis installation.
In some embodiments of the invention, the pretreatment unit include be sequentially connected broken bag mechanism, roller screen mechanism, Sorting mechanism and crushing mechanism.Thus, it is possible to effectively the inorganic matter in house refuse, metal etc. are separated and by house refuse It is crushed to the particle diameter for being suitable to pyrolysis installation treatment.
In the second aspect of the present invention, the present invention proposes a kind of using treatment life according to the above embodiment of the present invention The method that the system of rubbish carries out domestic rubbish disposal.Embodiments in accordance with the present invention, the method includes：(1) by house refuse Pre-processed in supply to the pretreatment unit, to obtain organic waste and inorganic refuse；(2) by the organic waste Pyrolysis processing is carried out in supply to the pyrolysis installation, to obtain high temperature pyrolysis oil gas, pyrolytic carbon and pyrolysis tail gas；(3) will The pyrolytic carbon is supplied carries out break process into the breaker, to obtain pyrolytic carbon particle；(4) by the pyrolytic carbon Particle and water vapour are supplied carries out gasification process into the gasification installation, to obtain gasify gas and residue after gasifying；(5) by institute State gasification gas supply into the first energy-conservation deacidifying device carry out heat exchange and depickling treatment, so as to obtain cooling depickling after gasify Gas；(6) gas that will gasify after the cooling depickling is supplied and carries out purified treatment into the gasification gas clean unit, net to obtain Change gasification gas；(7) by the part supply of the purification gasification gas to the first collecting carbonic anhydride unit, to obtain the One high-purity carbon dioxide gas and high heating value gasification gas；(8) high heating value gasification gas is supplied into the generator unit Row combustion power generation, to obtain combustion tail gas.
Thus, the method for the treatment of house refuse according to embodiments of the present invention by the way that house refuse is pre-processed after supply to Pyrolysis installation carries out pyrolysis processing, to obtain high temperature pyrolysis oil gas, pyrolytic carbon and pyrolysis tail gas；Wherein, pyrolytic carbon is through broken After supply to gasification installation and carry out gasification process, obtain the gas that gasifies；And then by the first energy-conservation deacidifying device, the gasification to obtaining Gas carries out heat exchange and depickling treatment, and further purified treatment is carried out in gasification gas clean unit through the gasification gas after depickling of lowering the temperature, It is purified gasification gas；And then, purification gasification gas is supplied into the first collecting carbonic anhydride unit, and to carbon dioxide gas therein Body is trapped, to obtain high heating value gasification gas；Then high heating value gasification gas is supplied to generator unit as fuel gas Row combustion power generation.Thus, embodiments in accordance with the present invention, the method is gasified by the pyrolytic carbon for obtaining domestic garbage pyrolysis To gasification gas, after gasification gas is purified, its calorific value is improved by removing the carbon dioxide in purification gasification gas, and then using high Calorific value gasification gas is generated electricity, it is achieved thereby that to the recycling of low heat value pyrolytic carbon, and significantly reduce dioxy Change the discharge of carbon gas, with environmental benefit and economic benefit higher, be particularly well-suited to Technique Popularizing and large-scale production.
In addition, the method for the treatment of house refuse according to the above embodiment of the present invention can also have following additional technology Feature,
In some embodiments of the invention, the method for the treatment house refuse is further included：(9) by the high temperature Pyrolysis oil gas is supplied into the second energy-conservation deacidifying device carries out heat exchange and depickling treatment, to be pyrolyzed after obtaining cooling depickling Oil gas；(10) oil gas will be pyrolyzed after the cooling depickling to supply and carry out purified treatment into the purifier, to obtain heat Solution oil and pyrolysis gas, and the pyrolysis gas are supplied into the gasification installation into step (4), the pyrolysis oil is supplied to step Suddenly the generator unit in (8).Thus, it is possible to pass through the high temperature pyrolysis oil that the second energy-conservation deacidifying device produces domestic garbage pyrolysis Gas carries out heat exchange and depickling treatment, and oil gas is pyrolyzed after obtaining cooling depickling, after purified treatment, oil gas quilt is pyrolyzed after cooling depickling It is separated into pyrolysis gas and pyrolysis oil；Wherein, pyrolysis gas enter gasification installation as gasifying agent, and pyrolytic carbon is converted into gasification gas, And pyrolysis gas carry out combustion power generation as fuel into generator unit.
In some embodiments of the invention, the method for the treatment house refuse is further included：(11) by the heat Solution tail gas and the combustion tail gas are supplied into the second collecting carbonic anhydride unit, to obtain the second high-purity carbon dioxide Carried out in gas, and the second energy-conservation deacidifying device for supplying into step (9) by the second high-purity carbon dioxide gas The pre-heat treatment, obtains carbon dioxide after the second preheating, and carbon dioxide after the described second preheating is supplied into the institute into step (4) State gasification installation.Thus, it is possible to pass through the pyrolysis tail gas and hair produced in the second collecting carbonic anhydride unit trapping pyrolysis installation Carbon dioxide in the combustion tail gas that combustion power generation is produced in electric unit, and then the carbon dioxide is supplied to second Energy-conservation deacidifying device, and heat using the high temperature pyrolysis oil gas obtained in pyrolysis installation preheated, and then, it is preheated after Carbon dioxide enters gasification installation as gasifying agent, and the pyrolytic carbon in gasification installation is converted into gasification gas.
In some embodiments of the invention, the method for the treatment house refuse is further included：(12) by the height The pyrolysis installation that another part of calorific value gasification gas is supplied into step (2) is used as fuel.Thus, it is possible to using The high heating value gasification gas obtained in one collecting carbonic anhydride unit is used as fuel gas for pyrolysis installation, so as to reduce pyrolysis dress The energy consumption put.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined Substantially and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram for the treatment of house refuse according to an embodiment of the invention；
Fig. 2 is the system structure diagram of the treatment house refuse according to further embodiment of the present invention；
Fig. 3 is the system structure diagram of the treatment house refuse according to another embodiment of the invention；
Fig. 4 is the method flow schematic diagram for the treatment of house refuse according to an embodiment of the invention；
Fig. 5 is the method flow schematic diagram of the treatment house refuse according to further embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
In the description of the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not It is interpreted as indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".
In the present invention, unless otherwise clearly defined and limited, term " connected " should be interpreted broadly, for example, can be with It is to be fixedly connected, or be detachably connected, or integrally；Can mechanically connect, or electrically connect；Can be straight Connect connected, it is also possible to be indirectly connected to by intermediary, can be two element internals connection or two phase interactions of element With relation, unless otherwise clearly restriction.For the ordinary skill in the art, on can understanding as the case may be State term concrete meaning in the present invention.
In the first aspect of the present invention, the present invention proposes a kind of system for processing house refuse.Reality of the invention Example is applied, with reference to Fig. 1~3, the system includes：Pretreatment unit 100, pyrolysis installation 200, breaker 300, gasification installation 400, First energy-conservation deacidifying device 500, gasification gas clean unit 600, the first collecting carbonic anhydride unit 700 and generator unit 800.Its In, pretreatment unit 100 has house refuse entrance 101, organic waste outlet 102 and inorganic refuse outlet 102；Pyrolysis installation 200 have organic waste entrance 201, high temperature pyrolysis oil gas vent 202, pyrolytic carbon outlet 203 and pyrolysis offgas outlet 204, have Machine garbage inlet 201 is connected with organic waste outlet 102；There is breaker 300 pyrolytic carbon entrance 301 and pyrolytic carbon particle to go out Mouth 302, pyrolytic carbon entrance 301 is connected with pyrolytic carbon outlet 203；Gasification installation 400 steams with pyrolytic carbon particle entrance 401, water Vapour entrance 402, gasification gas outlet 403 and gasification solid discharge 404, pyrolytic carbon particle entrance 401 and pyrolytic carbon particle outlet 302 It is connected；First energy-conservation deacidifying device 500 has gasification gas outlet 502 after gasification gas entrance 501 and cooling depickling, and gasify gas entrance 501 are connected with gasification gas outlet 403；Gasification gas clean unit 600 has gasification gas entrance 601 and purification gasification after cooling depickling Gas outlet 602, the gas entrance 601 that gasifies after cooling depickling is connected with gas outlet 502 of gasifying after cooling depickling；First carbon dioxide is caught Collection unit 700 has the gasification gas outlet of the first gas inlet 701, the first high-purity carbon dioxide gas vent 702 and high heating value 703, the first gas inlet 701 is connected with purification gasification gas outlet 602；Generator unit 800 has fuel inlet 801 and burning tail Gas outlet 802, fuel inlet 801 is connected with high heating value gasification gas outlet 703.
System below with reference to Fig. 1~3 pair treatment house refuse according to embodiments of the present invention is described in detail：
There is embodiments in accordance with the present invention, pretreatment unit 100 house refuse entrance 101, organic waste to export 102 and Inorganic refuse outlet 102, pretreatment unit 100 is suitable to be pre-processed house refuse, to obtain organic waste and inorganic Rubbish.Specifically, containing inorganic matters such as part metals, glass, fragments of brick in house refuse, this kind of inorganic matter cannot subsequently be pyrolyzed Pyrolytic carbon or the pyrolysis resource such as oil gas are generated in treatment, and the house refuse of inorganic matter will be mixed with is carried out pyrolysis processing and can also increase The energy consumption of pyrolysis processing simultaneously reduces the efficiency of pyrolysis processing.Embodiments in accordance with the present invention, inventor has found, by house refuse Before carrying out pyrolysis processing, the inorganic matter in house refuse is removed in advance, the effect of follow-up pyrolysis processing can be effectively improved Rate and reducing energy consumption.
Embodiments in accordance with the present invention, pretreatment unit 100 includes the broken bag mechanism 110, the roller screen mechanism that are sequentially connected 120th, sorting mechanism 130 and crushing mechanism 140.Specifically, can be by broken bag mechanism 110, roller screen mechanism 120 and separator Structure 130 is processed to remove the inorganic matters such as the metal in house refuse, glass, fragment of brick, and then will be lived by crushing mechanism 140 Rubbish is crushed.According to a particular embodiment of the invention, Domestic garbage crushing to particle diameter can be not higher than 20mm, thus may be used To significantly improve the efficiency of follow-up pyrolysis processing.
Embodiments in accordance with the present invention, pyrolysis installation 200 has organic waste entrance 201, high temperature pyrolysis oil gas vent 202nd, pyrolytic carbon outlet 203 and pyrolysis offgas outlet 204, organic waste entrance 201 are connected with organic waste outlet 102, are pyrolyzed Device 200 is suitable to for organic waste to carry out pyrolysis processing, to obtain high temperature pyrolysis oil gas, pyrolytic carbon and pyrolysis tail gas.Specifically Ground, processes the organic waste moisture content for obtaining and is about 20~60wt% by pretreatment unit 100, and organic waste is supplied to heat Solution device, layer thickness is 50~250mm, to carry out pyrolysis processing.
According to a particular embodiment of the invention, pyrolysis installation 200 can be revolving bed pyrolysis oven, and revolving bed pyrolysis oven can be with Using without heat carrier heat accumulating type rotating bed, include revolving bed pyrolysis chamber, ring-shaped furnace bottom without heat carrier heat accumulating type rotating bed and divide Wei Yu not the mechanism such as the upper and lower heat storage type gas radiation pipe burner of ring-shaped furnace bottom and cloth, discharging, regenerative gas radiation Pipe burner arrangement is in annular furnace wall, the heat needed for refuse pyrolysis are provided in the way of heat radiation.Revolving bed pyrolysis oven edge turns Dynamic direction is disposed with dry section, the area of pyrolytic reaction one, the area of pyrolytic reaction two and the area of pyrolytic reaction three, pending organic rubbish Rubbish enters revolving bed pyrolysis oven from dry section, and the time that revolving bed pyrolysis oven rotates a circle can be 2h, in revolving bed pyrolysis oven The furnace roof of regional is provided with high temperature pyrolysis oil gas vent, for collecting high temperature pyrolysis oil gas, in the area of pyrolytic reaction three End pyrolytic carbon exit is provided with drawing mechanism, for collecting pyrolytic carbon, in addition, in order that pending organic waste is heated Even, furnace bottom flitch can select perforated plate.
Embodiments in accordance with the present invention, breaker 300 has pyrolytic carbon entrance 301 and pyrolytic carbon particle outlet 302, heat Solution charcoal entrance 301 is connected with pyrolytic carbon outlet 203, and breaker 300 is suitable to carry out the pyrolytic carbon that organic waste pyrolysis is obtained Break process, to obtain pyrolytic carbon particle.
Embodiments in accordance with the present invention, the particle diameter of pyrolytic carbon particle can be not higher than 10mm.Inventor has found, by inciting somebody to action Before pyrolytic carbon carries out gasification process, pyrolytic carbon is crushed to the particle diameter in advance, the efficiency of gasification process can be significantly improved simultaneously Reduce the energy consumption of gasification process.
Embodiments in accordance with the present invention, gasification installation 400 has pyrolytic carbon particle entrance 401, steam entry 402, gas Change gas outlet 403 and gasification solid discharge 404, pyrolytic carbon particle entrance 401 is connected with pyrolytic carbon particle outlet 302, gasification dress Put 400 to be suitable to pyrolytic carbon particle and vapor are contacted and carried out gasification process, to obtain gasify gas and residue after gasifying.Specifically Ground, the pyrolytic carbon obtained by refuse pyrolysis has certain combustion heat, belongs to the energy product of low heat value, exists by by pyrolytic carbon Gasification process is carried out in gasification installation, pyrolytic carbon can be made to be converted into calorific value gasification gas higher, and the exploitation value of residue after gasifying Value is relatively low, can be used as construction material or carries out landfill disposal.
According to a particular embodiment of the invention, the temperature of gasification process can be 1200 DEG C or so, it is possible thereby to effectively Pyrolytic carbon is converted into gasification gas.
Embodiments in accordance with the present invention, the first energy-conservation deacidifying device 500 has gas after gasification gas entrance 501 and cooling depickling Change gas outlet 502, gasification gas entrance 501 is connected with gasification gas outlet 403, and the first energy-conservation deacidifying device 500 is suitable to the gas that gasifies Heat exchange and depickling treatment are carried out, to gasify gas after obtaining cooling depickling.Embodiments in accordance with the present invention, by using first segment Energy deacidifying device 500, can be down to 0.05v% by the acidic gas concentration in the gas that gasifies；Additionally, the first energy-conservation deacidifying device 500 have heat accumulation function concurrently, and the heat that accumulation of heat is obtained can be used for collecting the dioxy for obtaining in follow-up collecting carbonic anhydride unit Change carbon to be heated.
Embodiments in accordance with the present invention, gasification gas clean unit 600 has gasification gas entrance 601 and purification after cooling depickling Gasification gas outlet 602, the gas entrance 601 that gasifies after cooling depickling is connected with gas outlet 502 of gasifying after cooling depickling, gasification gas purification Unit 600 is suitable to for the gas that gasifies after cooling depickling to carry out purified treatment, to be purified gasification gas.
Embodiments in accordance with the present invention, gasification gas clean unit 600 includes the wet dedusting tower 610, electric fishing being sequentially connected Tar device 620 and desulphurization denitration tower 630, thus, it is possible to effectively carry out dedusting, tar removing to the gas that gasifies after cooling depickling, take off Sulphur and denitration.Specifically, the gas that gasifies after cooling depickling completes dedusting in wet dedusting tower 610 first, by using Quench Recirculated water is sprayed, and can be removed the dust of the gas that gasifies after depickling of lowering the temperature, and then the pneumatic transmission that will gasify after cooling depickling enters horizontal stroke Pipe primary cooler, will be lowered the temperature the air cooling to 21 DEG C of left sides that gasify after depickling using 32 DEG C of recirculated waters and 16 DEG C of the two of chilled water sections of cooling waters The right side, the electrical tar precipitator 620 for then being operated simultaneously by two parallel connections, the tar that will be carried secretly in gas is removed, then using sieve The pneumatic transmission to desulphurization denitration tower 630 that gasifies after cooling depickling is completed desulphurization denitration, to be purified gasification gas by thatch air blower.
Embodiments in accordance with the present invention, the first collecting carbonic anhydride unit 700 has the first gas inlet 701, first high Pure carbon dioxide gas vent 702 and high heating value gasification gas outlet 703, the first gas inlet 701 and purification gasification gas outlet 602 It is connected, the first collecting carbonic anhydride unit 700 is suitable in the purification gasification gas to being prepared in gasification gas clean unit 600 Carbon dioxide is trapped, to obtain the first high-purity carbon dioxide gas and high heating value gasification gas.Implementation of the invention Example, still contains partial CO 2 in purification gasification gas, thus calorific value is relatively low, can by the first collecting carbonic anhydride unit 700 To trap in purification gasification gas more than 90% carbon dioxide, and the carbon dioxide purity that obtains of trapping up to 98% with On, it is possible thereby to improve the calorific value of purification gasification gas, gas that high heating value is gasified is supplied to pyrolysis installation 200 or hair as fuel gas Electric unit 800 is used.
Embodiments in accordance with the present invention, the first collecting carbonic anhydride unit 700 includes the absorption tower 710, the solution that are sequentially connected Inhale tower 720, cooler 730 and gas-liquid separator 740.Embodiments in accordance with the present invention, purification gasification gas feeds through blower fan pressurization Absorption tower 710, with absorbent alkanolamine solution counter current contacting in absorption tower 710, the carbon dioxide in purification gasification gas is absorbed Agent absorbs, and obtains rich solution, and rich solution feeds desorber, the mixing of desorption generation carbon dioxide, steam and mist through rich solution pump Gas and lean solution, the carbon dioxide after desorption is through the cooling down of cooler 730 so that steam and mist are changed into Shui Hepao Foam, and then the water and foam in mixed gas are removed by gas-liquid separator 740, obtain purity carbon dioxide higher.
Embodiments in accordance with the present invention, generator unit 800 has fuel inlet 801 and combustion tail gas outlet 802, and fuel enters Mouth 801 is connected with high heating value gasification gas outlet 703, and generator unit 800 is suitable to be warmed from height with follow-up using high heating value gasification gas Isolated pyrolysis oil carries out combustion power generation in solution oil gas.Specifically, can by high heating value gasify gas or pyrolysis oil supply to The waste heat boiler of generator unit 800, exchanges heat with water in waste heat boiler or produces superheated steam, superheated steam to enter by burning Steam Turbine Driven generator is generated electricity, and the electric energy of generation is connected to the grid.
Referring to figs. 2 and 3 the system for the treatment of house refuse according to embodiments of the present invention is further included：Second energy-conservation Deacidifying device 900 and purifier 1000.
Embodiments in accordance with the present invention, the second energy-conservation deacidifying device 900 has high temperature pyrolysis oil gas entrance 901 and cooling de- Oil gas vent 902 is pyrolyzed after acid, high temperature pyrolysis oil gas entrance 901 is connected with high temperature pyrolysis oil gas vent 202, the second energy-conservation depickling Device 900 is suitable to for the high temperature pyrolysis oil gas that domestic garbage pyrolysis are produced to carry out heat exchange and depickling treatment, de- to obtain cooling Oil gas is pyrolyzed after acid.Embodiments in accordance with the present invention, by use the second energy-conservation deacidifying device 900, can by temperature be 500~ 800 DEG C of high temperature pyrolysis oil gas temperature is down to 100~200 DEG C, and acidic gas concentration therein is down into 0.05v%；Additionally, Second energy-conservation deacidifying device 900 has heat accumulation function concurrently, and the heat that accumulation of heat is obtained can be used for follow-up collecting carbonic anhydride unit The middle carbon dioxide for obtaining of collecting is heated.
Embodiments in accordance with the present invention, purifier 1000 is pyrolyzed oil gas entrance 1001, pyrolysis gas after having cooling depickling Outlet 1002 and pyrolysis oil export 1003, oil gas vent is pyrolyzed after cooling depickling after pyrolysis oil gas entrance 1001 and cooling depickling 902 are connected, and pyrolysis gas outlet 1002 is connected with gasification installation 400, and pyrolysis oil export 1003 is connected with TRT 800, purifies Device 1000 be suitable to will cooling depickling after be pyrolyzed oil gas carry out purified treatment, to obtain pyrolysis oil and pyrolysis gas.According to this hair Bright embodiment, not higher than 0.01g/Nm can be down to by purified treatment by the hydrogen sulfide content being pyrolyzed in oil gas3, dust contains Amount is down to not higher than 50mg/Nm3, and it is pyrolysis oil and pyrolysis gas that will be pyrolyzed Oil-gas Separation simultaneously.
Embodiments in accordance with the present invention, purifier 1000 includes the wet dedusting tower 1010, electrically trapped tar oil being sequentially connected Device 1020 and desulphurization denitration tower 1030, thus, it is possible to effectively carry out dedusting, tar removing to being pyrolyzed oil gas after cooling depickling, take off Sulphur and denitration.Specifically, it is pyrolyzed oil gas after cooling depickling and completes dedusting in wet dedusting tower 1010 first, by using sharp Cool circulation water is sprayed, and can be removed the dust that oil gas is pyrolyzed after depickling of lowering the temperature, and then will be pyrolyzed oil gas after cooling depickling Feeding transverse pipe initial cooler, will be lowered the temperature pyrolysis oil air cooling after depickling using 32 DEG C of recirculated waters and 16 DEG C of the two of chilled water sections of cooling waters To 21 DEG C or so, the electrical tar precipitator 1020 for then being operated simultaneously by two parallel connections, the tar that will be carried secretly in gas is removed, so Use Roots blower by pyrolysis oil pneumatic transmission after cooling depickling to desulphurization denitration tower 1030 afterwards, desulphurization denitration is completed, to obtain Pyrolysis oil and pyrolysis gas.
Further, embodiments in accordance with the present invention, can supply to gasification installation 400 using pyrolysis gas as gasifying agent Row gasification process, gasification gas is converted into by pyrolytic carbon.A specific embodiment of the invention, will be pyrolyzed by gasification process Gas is converted into gasification gas, compared with former pyrolysis gas, CO2Content is reduced to 1.6v% by 32v%, and CO contents are promoted to by 9.7v% 65.9v%, calorific value is by 3962kcal/Nm3It is promoted to 6201.6kcal/Nm3, 74.2% is increased equivalent to pyrolysis gas yield.
Referring to figs. 2 and 3 the system for the treatment of house refuse according to embodiments of the present invention is further included：Second dioxy Change carbon capture unit 1100.
Embodiments in accordance with the present invention, the second collecting carbonic anhydride unit 1100 has the second gas inlet 1101 and second High-purity carbon dioxide gas vent 1102, the second gas inlet 1101 is exported with pyrolysis offgas outlet 204 and combustion tail gas respectively 802 are connected, and the second high-purity carbon dioxide gas vent 1102 is connected with the second energy-conservation deacidifying device 900, the second energy-conservation depickling dress Putting 900 also has carbon dioxide outlet 903 after the second preheating, carbon dioxide outlet 903 and the phase of gasification installation 400 after the second preheating Even, the second collecting carbonic anhydride unit 1100 is suitable to be produced in the pyrolysis tail gas to being produced in pyrolysis installation 200 and generator unit 800 Carbon dioxide in raw combustion tail gas is trapped, to obtain the second high-purity carbon dioxide gas, and then for obtaining After two high-purity carbon dioxide gases are preheated in the second energy-conservation deacidifying device 900, as gasifying agent in supply to gasification installation 400 Use.Specifically, inner passage isolated from one another and external channel, external channel can be included inside the second energy-conservation deacidifying device Around inner passage arrangement, and it is made up of the heat storage with depickling function in inner passage, revolving bed pyrolysis oven is obtained High temperature pyrolysis oil gas by inner passage enter the second energy-conservation deacidifying device can realize to the accumulation of heat of heat storage and itself Depickling, so as to be pyrolyzed oil gas after obtaining cooling depickling, and the carbon dioxide that the second collecting carbonic anhydride unit is obtained is by entering External channel is preheated into the second energy-conservation deacidifying device, the carbon dioxide after being preheated.And the first energy-conservation deacidifying device Structure is same as the second energy-conservation deacidifying device.It should be noted that those skilled in the art can according to actual needs to de- The heat storage of acid function is selected.
Embodiments in accordance with the present invention, absorption tower 1110 that the second collecting carbonic anhydride unit 1100 includes being sequentially connected, Desorber 1120, cooler 1130 and gas-liquid separator 1140.Embodiments in accordance with the present invention, pyrolysis tail gas and combustion tail gas warp Blower fan pressurization feeds absorption tower 1110, with absorbent alkanolamine solution counter current contacting in absorption tower 1110, is pyrolyzed tail gas and burning Carbon dioxide in tail gas is absorbed by absorbent, obtains rich solution, and rich solution feeds desorber, desorption generation carbon dioxide through rich solution pump The mixed gas and lean solution of gas, steam and mist, the carbon dioxide after desorption is through the cooling down of cooler 1130 so that Steam and mist are changed into water and foam, and then remove the water and foam in mixed gas by gas-liquid separator 1140, obtain pure Degree carbon dioxide higher.Embodiments in accordance with the present invention, can be trapped by the second collecting carbonic anhydride unit 1100 More than 90% carbon dioxide in pyrolysis tail gas and combustion tail gas, and the carbon dioxide purity that obtains of trapping up to 98% with On.Further, embodiments in accordance with the present invention, the high-pureness carbon dioxide gas enters the second energy-conservation deacidifying device 900, leads to Cross and be preheated to 100~500 DEG C using the heat of the high temperature pyrolysis oil gas prepared in pyrolysis installation 200, so it is preheated after Carbon dioxide enter gasification installation 400, reacted as gasifying agent and pyrolytic carbon, pyrolytic carbon is converted into gasification gas.
According to a particular embodiment of the invention, high heating value gasification gas outlet 703 can be connected with pyrolysis installation 200, thus Can be used for pyrolysis installation as fuel gas by the use of high heating value gasification gas, so as to reduce the energy consumption of pyrolysis installation.
Thus, the system for the treatment of house refuse according to embodiments of the present invention is removed wherein by the way that house refuse is pre-processed Inorganic matter, and organic waste supplied to pyrolysis installation carry out pyrolysis processing, so as to obtain high temperature pyrolysis oil gas, pyrolytic carbon and Pyrolysis tail gas；Wherein, pyrolytic carbon can supply to gasification installation carry out gasification process after crushing, obtain the gas that gasifies；And then it is logical The first energy-conservation deacidifying device is crossed, the gasification gas to obtaining is exchanged heat and depickling treatment, and one is entered through the gasification gas after depickling of lowering the temperature Step carries out purified treatment in gasification gas clean unit, and then, enter the first collecting carbonic anhydride unit by the gasification gas for purifying, Trapped by carbon dioxide therein, to obtain high heating value gasification gas；Meanwhile, the high temperature that organic waste pyrolysis is produced Pyrolysis oil gas carries out heat exchange by the second energy-conservation deacidifying device and depickling is processed, and one is entered through the high temperature pyrolysis oil gas after depickling of lowering the temperature Step carries out purified treatment in purifier, obtains pyrolysis gas and pyrolysis oil, pyrolysis gas as gasifying agent enter gasification installation by its In pyrolytic carbon be converted into gasification gas, and pyrolysis oil carries out combustion power generation into generator unit；The heat that organic waste pyrolysis is produced The combustion tail gas that solution tail gas and generator unit are produced carry out collecting carbonic anhydride into the second collecting carbonic anhydride unit, trap To the high temperature pyrolysis oil gas that is produced with pyrolysis installation into the second energy-conservation deacidifying device of carbon dioxide exchanged heat, through pre- The carbon dioxide of heat is used to for pyrolytic carbon to be converted into gasification gas into gasification furnace as gasifying agent；In addition, gasification gas purification The purification gasification gas prepared in unit can be supplied through the high heating value gasification gas that collecting carbonic anhydride is obtained as fuel gas To pyrolysis installation and/or generator unit, so as to further reduce the energy consumption of system.Thus, embodiments in accordance with the present invention, this is The pyrolytic carbon by the way that domestic garbage pyrolysis are obtained of uniting gasifies and obtains the gas that gasifies, after gasification gas is purified, by removing purified gas Change the carbon dioxide in gas to improve its calorific value, and then gasify gas as fuel gas return pyrolysis installation by the use of high heating value or be used for Generate electricity, it is achieved thereby that to the recycling of low heat value pyrolytic carbon, and significantly reduce the discharge of carbon dioxide, With environmental benefit and economic benefit higher, Technique Popularizing and large-scale production are particularly well-suited to.
In the second aspect of the present invention, the present invention proposes a kind of using treatment life according to the above embodiment of the present invention The method that the system of rubbish carries out domestic rubbish disposal.Embodiments in accordance with the present invention, the method includes：(1) by house refuse Pre-processed in supply to the pretreatment unit, to obtain organic waste and inorganic refuse；(2) by the organic waste Pyrolysis processing is carried out in supply to the pyrolysis installation, to obtain high temperature pyrolysis oil gas, pyrolytic carbon and pyrolysis tail gas；(3) will The pyrolytic carbon is supplied carries out break process into the breaker, to obtain pyrolytic carbon particle；(4) by the pyrolytic carbon Particle and water vapour are supplied carries out gasification process into the gasification installation, to obtain gasify gas and residue after gasifying；(5) by institute State gasification gas supply into the first energy-conservation deacidifying device carry out heat exchange and depickling treatment, so as to obtain cooling depickling after gasify Gas；(6) gas that will gasify after the cooling depickling is supplied and carries out purified treatment into the gasification gas clean unit, net to obtain Change gasification gas；(7) by the part supply of the purification gasification gas to the first collecting carbonic anhydride unit, to obtain the One high-purity carbon dioxide gas and high heating value gasification gas；(8) high heating value gasification gas is supplied into the generator unit Row combustion power generation, to obtain combustion tail gas.
The method to treatment house refuse according to embodiments of the present invention is described in detail below, with reference to Fig. 4 and Fig. 5, The method includes：
S100：Pretreatment
In the step, house refuse is supplied and is pre-processed into pretreatment unit, to obtain organic waste and nothing Machine rubbish.Specifically, metal, glass, the fragment of brick during broken bag, roller screen and sorting process remove house refuse can be passed sequentially through Deng inorganic matter, and then house refuse is crushed, to obtain organic waste.According to a particular embodiment of the invention, can be with Domestic garbage crushing to particle diameter is not higher than 20mm, it is possible thereby to significantly improve the efficiency of follow-up pyrolysis processing.
S200：Pyrolysis processing
In the step, organic waste is supplied into pyrolysis installation carries out pyrolysis processing, so as to obtain high temperature pyrolysis oil gas, Pyrolytic carbon and pyrolysis tail gas.Specifically, by pretreatment unit 100 process the organic waste moisture content that obtains be about 20~ 60wt%, organic waste is supplied to pyrolysis installation, and layer thickness is 50~250mm, to carry out pyrolysis processing.
According to a particular embodiment of the invention, pyrolysis installation can be revolving bed pyrolysis oven, and revolving bed pyrolysis oven can be adopted With without heat carrier heat accumulating type rotating bed, revolving bed pyrolysis chamber, ring-shaped furnace bottom and difference are included without heat carrier heat accumulating type rotating bed Positioned at the mechanism such as the upper and lower heat storage type gas radiation pipe burner of ring-shaped furnace bottom and cloth, discharging, regenerative gas radiant tube Burner arrangement is in annular furnace wall, the heat needed for refuse pyrolysis are provided in the way of heat radiation.Revolving bed pyrolysis oven is along rotation Direction be disposed with dry section, the area of pyrolytic reaction one, the area of pyrolytic reaction two and the area of pyrolytic reaction three, pending organic waste Enter revolving bed pyrolysis oven from dry section, the time that revolving bed pyrolysis oven rotates a circle can be 2h, each in revolving bed pyrolysis oven The furnace roof in individual region is provided with high temperature pyrolysis oil gas vent, for collecting high temperature pyrolysis oil gas, at the end in the area of pyrolytic reaction three End pyrolytic carbon exit is provided with drawing mechanism, for collecting pyrolytic carbon, in addition, in order that pending organic waste is heated Even, furnace bottom flitch can select perforated plate.
S300：Break process
In the step, the pyrolytic carbon that will be obtained in S200 is supplied to breaker and carries out break process, to be pyrolyzed Charcoal particle.Embodiments in accordance with the present invention, the particle diameter of pyrolytic carbon particle can be not higher than 10mm.Inventor has found, by inciting somebody to action Before pyrolytic carbon carries out gasification process, pyrolytic carbon is crushed to the particle diameter in advance, the efficiency of gasification process can be significantly improved simultaneously Reduce the energy consumption of gasification process.
S400：Gasification process
In the step, pyrolytic carbon particle and vapor are supplied to gasification installation carries out gasification process, to be gasified Gas and residue after gasifying.Specifically, the pyrolytic carbon for being obtained by refuse pyrolysis has certain combustion heat, belongs to the energy production of low heat value Thing, gasification process is carried out by by pyrolytic carbon in gasification installation, and pyrolytic carbon can be made to be converted into calorific value gasification gas higher, and The value of residue after gasifying is relatively low, can be used as construction material or carries out landfill disposal.
According to a particular embodiment of the invention, the temperature of gasification process can be 1200 DEG C or so, it is possible thereby to effectively Pyrolytic carbon is converted into gasification gas.
S500：First heat exchange and depickling treatment
In the step, the gasification gas that will be prepared in S400 supplies and is exchanged heat and taken off into the first energy-conservation deacidifying device Acid treatment, to gasify gas after obtaining cooling depickling.Embodiments in accordance with the present invention, by using the first energy-conservation deacidifying device, Acidic gas concentration in the temperature degree that gasifies can be down to 0.05v%；Additionally, the first energy-conservation deacidifying device has accumulation of heat work(concurrently Can, the heat that accumulation of heat is obtained can be used for being heated to collecting the carbon dioxide for obtaining in follow-up collecting carbonic anhydride unit.
S600：First purified treatment
In the step, the gas that will gasify after cooling depickling is supplied and carries out purified treatment into gasification gas clean unit, so as to To purification gasification gas.Embodiments in accordance with the present invention, gasification gas clean unit includes the wet dedusting tower, the electric tar that are sequentially connected Oily device and desulphurization denitration tower, it is possible thereby to effectively carry out dedusting, tar removing, desulfurization to the gas that gasifies after cooling depickling and take off Nitre.Specifically, the gas that gasifies after cooling depickling completes dedusting in wet dedusting tower first, is sprayed by using Quench recirculated water Spill, the dust of the gas that gasifies after depickling of lowering the temperature can be removed, and then the pneumatic transmission that will gasify after cooling depickling enters transverse pipe initial cooler, uses 32 DEG C of recirculated waters and 16 DEG C of the two of chilled water sections of cooling waters will gasify air cooling to 21 DEG C or so after cooling depickling, then by two The electrical tar precipitator of platform operation simultaneously in parallel, the tar that will be carried secretly in gas is removed, and then will be lowered the temperature using Roots blower de- Gasify pneumatic transmission to desulphurization denitration tower after acid, desulphurization denitration is completed, to be purified gasification gas.
S700：First collecting carbonic anhydride
In the step, by the part supply of purification gasification gas to the first collecting carbonic anhydride unit, to obtain first High-purity carbon dioxide gas and high heating value gasification gas.Embodiments in accordance with the present invention, still contain part dioxy in purification gasification gas Change carbon, thus calorific value is relatively low, and in purification gasification gas more than 90% dioxy can be trapped by the first collecting carbonic anhydride unit Change carbon, and the carbon dioxide purity that trapping is obtained up to more than 98%, it is possible thereby to the calorific value of purification gasification gas is improved, will High heating value gasification gas is supplied to pyrolysis installation or generator unit as fuel gas and is used.
Embodiments in accordance with the present invention, it is absorption tower that the first collecting carbonic anhydride unit includes being sequentially connected, desorber, cold But device and gas-liquid separator.Embodiments in accordance with the present invention, purification gasification gas feeds absorption tower through blower fan pressurization, in absorption tower With absorbent alkanolamine solution counter current contacting, the carbon dioxide in purification gasification gas absorbed by absorbent, obtains rich solution, and rich solution is through richness Liquid pump feeds desorber, the mixed gas and lean solution of desorption generation carbon dioxide, steam and mist, the titanium dioxide after desorption Carbon gas is through cooler cooling down so that steam and mist are changed into water and foam, and then remove mixing by gas-liquid separator Water and foam in gas, obtain purity carbon dioxide higher.
According to a particular embodiment of the invention, can be using the part supply of high heating value gasification gas to pyrolysis installation as combustion Material is used, it is possible thereby to significantly reduce the energy consumption of pyrolysis installation.
S800：Generate electricity
In the step, high heating value gasification gas is supplied into generator unit carries out combustion power generation.Specifically, can be by hyperpyrexia Value gasification gas is supplied to the waste heat boiler of generator unit, is exchanged heat or by the generation superheated steam that burns with water in waste heat boiler, Superheated steam is generated electricity into Steam Turbine Driven generator, and the electric energy of generation is connected to the grid.
With reference to Fig. 4 and Fig. 5, the method for the treatment of house refuse according to embodiments of the present invention is further included：
S900：Second heat exchange and depickling treatment
In the step, high temperature pyrolysis oil gas is supplied into the second energy-conservation deacidifying device carries out heat exchange and depickling treatment, with Just oil gas is pyrolyzed after obtaining cooling depickling.Embodiments in accordance with the present invention, by using the second energy-conservation deacidifying device, can be by temperature The high temperature pyrolysis oil gas temperature spent for 500~800 DEG C is down to 100~200 DEG C, and acidic gas concentration therein is down to 0.05v%；Additionally, the second energy-conservation deacidifying device has heat accumulation function concurrently, the heat that accumulation of heat is obtained can be used for follow-up titanium dioxide The carbon dioxide for obtaining is collected in carbon capture unit to be heated.
S1000：Second purified treatment
In the step, pyrolysis oil gas is supplied into purifier and carries out purified treatment after the depickling that will lower the temperature, to obtain heat Solution oil and pyrolysis gas, and pyrolysis gas are supplied into the gasification installation into S400, pyrolysis oil is supplied the generator unit into S800. Embodiments in accordance with the present invention, not higher than 0.01g/ can be down to by purified treatment by the hydrogen sulfide content being pyrolyzed in oil gas Nm3, dust content is down to not higher than 50mg/Nm3, and it is pyrolysis oil and pyrolysis gas that will be pyrolyzed Oil-gas Separation simultaneously.
Embodiments in accordance with the present invention, purifier includes the wet dedusting tower, electrical tar precipitator and the desulfurization that are sequentially connected Denitrating tower, thus, it is possible to effectively carry out dedusting, tar removing, desulfurization and denitration to being pyrolyzed oil gas after cooling depickling.Specifically Ground, is pyrolyzed oil gas and completes dedusting in wet dedusting tower first after cooling depickling, is sprayed by using Quench recirculated water, can Removed with by the dust that oil gas is pyrolyzed after depickling of lowering the temperature, and then pyrolysis oil pneumatic transmission after cooling depickling is entered into transverse pipe initial cooler, used 32 DEG C of recirculated waters and 16 DEG C of the two of chilled water sections of cooling waters to 21 DEG C or so, then pass through pyrolysis oil air cooling after cooling depickling The electrical tar precipitator that two parallel connections are operated simultaneously, the tar that will be carried secretly in gas is removed, and then will be lowered the temperature using Roots blower Pyrolysis oil pneumatic transmission completes desulphurization denitration, to obtain pyrolysis oil and pyrolysis gas to desulphurization denitration tower after depickling.
Further, embodiments in accordance with the present invention, can supply to gasification installation 400 using pyrolysis gas as gasifying agent Row gasification process, gasification gas is converted into by pyrolytic carbon.A specific embodiment of the invention, will be pyrolyzed by gasification process Gas is converted into gasification gas, compared with former pyrolysis gas, CO2Content is reduced to 1.6v% by 32v%, and CO contents are promoted to by 9.7v% 65.9v%, calorific value is by 3962kcal/Nm3It is promoted to 6201.6kcal/Nm3, 74.2% is increased equivalent to pyrolysis gas yield.Separately Outward, can supply to generator unit pyrolysis oil carries out combustion power generation.
S1100：Second collecting carbonic anhydride
In the step, the combustion tail gas obtained in the pyrolysis tail gas and S800 that will be obtained in S200 are supplied to the second titanium dioxide In carbon capture unit, to obtain the second high-purity carbon dioxide gas, and the second high-purity carbon dioxide gas is supplied to S900 In the second energy-conservation deacidifying device in carry out the pre-heat treatment, obtain carbon dioxide after the second preheating, and dioxy after second is preheated Used as gasifying agent in gasification installation in change carbon supply to S400.
Embodiments in accordance with the present invention, it is absorption tower that the second collecting carbonic anhydride unit includes being sequentially connected, desorber, cold But device and gas-liquid separator.Embodiments in accordance with the present invention, pyrolysis tail gas and combustion tail gas feed absorption tower through blower fan pressurization, With absorbent alkanolamine solution counter current contacting in absorption tower, the carbon dioxide in pyrolysis tail gas and combustion tail gas is absorbed by absorbent, Obtain rich solution, rich solution feeds desorber through rich solution pump, mixed gas of desorption generation carbon dioxide, steam and mist and poor Liquid, the carbon dioxide after desorption is through cooler cooling down so that steam and mist are changed into water and foam, and then by gas Liquid/gas separator removes the water and foam in mixed gas, obtains purity carbon dioxide higher.Implementation of the invention Example, in pyrolysis tail gas and combustion tail gas more than 90% carbon dioxide can be trapped by the second collecting carbonic anhydride unit, and The carbon dioxide purity that trapping is obtained is up to more than 98%.Further, embodiments in accordance with the present invention, the high-purity two Carbon oxide gas enter the second energy-conservation deacidifying device, by using the heat of the high temperature pyrolysis oil gas prepared in pyrolysis installation Be preheated to 100~500 DEG C, so it is preheated after carbon dioxide enter gasification installation, it is anti-with pyrolytic carbon as gasifying agent Should, pyrolytic carbon is converted into gasification gas.
Thus, the method for the treatment of house refuse according to embodiments of the present invention is removed wherein by the way that house refuse is pre-processed Inorganic matter, and organic waste supplied to pyrolysis installation carry out pyrolysis processing, so as to obtain high temperature pyrolysis oil gas, pyrolytic carbon and Pyrolysis tail gas；Wherein, pyrolytic carbon can supply to gasification installation carry out gasification process after crushing, obtain the gas that gasifies；And then it is logical The first energy-conservation deacidifying device is crossed, the gasification gas to obtaining is exchanged heat and depickling treatment, and one is entered through the gasification gas after depickling of lowering the temperature Step carries out purified treatment in gasification gas clean unit, and then, enter the first collecting carbonic anhydride unit by the gasification gas for purifying, Trapped by carbon dioxide therein, to obtain high heating value gasification gas；Meanwhile, the high temperature that organic waste pyrolysis is produced Pyrolysis oil gas carries out heat exchange by the second energy-conservation deacidifying device and depickling is processed, and one is entered through the high temperature pyrolysis oil gas after depickling of lowering the temperature Step carries out purified treatment in purifier, obtains pyrolysis gas and pyrolysis oil, pyrolysis gas as gasifying agent enter gasification installation by its In pyrolytic carbon be converted into gasification gas, and pyrolysis oil carries out combustion power generation into generator unit；The heat that organic waste pyrolysis is produced The combustion tail gas that solution tail gas and generator unit are produced carry out collecting carbonic anhydride into the second collecting carbonic anhydride unit, trap To the high temperature pyrolysis oil gas that is produced with pyrolysis installation into the second energy-conservation deacidifying device of carbon dioxide exchanged heat, through pre- The carbon dioxide of heat is used to for pyrolytic carbon to be converted into gasification gas into gasification furnace as gasifying agent；In addition, gasification gas purification The purification gasification gas prepared in unit can be supplied through the high heating value gasification gas that collecting carbonic anhydride is obtained as fuel gas To pyrolysis installation and/or generator unit, so that further reducing energy consumption.Thus, embodiments in accordance with the present invention, the method passes through The pyrolytic carbon gasification that domestic garbage pyrolysis are obtained obtains the gas that gasifies, will after gasification gas purification, by removing purification gasification gas in Carbon dioxide to improve its calorific value, and then return to pyrolysis installation or for generating electricity as fuel gas by the use of the high heating value gas that gasifies, It is achieved thereby that to the recycling of low heat value pyrolytic carbon, and the discharge of carbon dioxide is significantly reduced, had Environmental benefit and economic benefit higher, is particularly well-suited to Technique Popularizing and large-scale production.
Below with reference to specific embodiment, present invention is described, it is necessary to explanation, these embodiments are only description Property, and the present invention is limited never in any form.
Embodiment
Pending house refuse is into being grouped into such as table 1：
The house refuse of table 1 is into being grouped into (wt%)
Title Fabric Plastics Paper Wooden bamboo Food waste Dregs Glass, metal Amount to
Wet basis 6.71 20.02 13.65 7.68 18.22 17.57 16.15 100
House refuse passes sequentially through metal, glass, fragment of brick that broken bag, roller screen and sorting process are removed in house refuse etc. Inorganic matter, and then house refuse is carried out into broken particle diameter not higher than 20mm, to obtain organic waste；
Organic waste is uniformly distributed into revolving bed pyrolysis oven, fabric thickness 100mm, in revolving bed pyrolysis oven, dry section Temperature is 350 DEG C, and the reaction temperature in the area of pyrolytic reaction one, 2nd area and 3rd area is 900 DEG C or so, reaction time 2h, to obtain Pyrolytic carbon, high temperature pyrolysis oil gas and pyrolysis tail gas, wherein, the composition and calorific value of high temperature pyrolysis oil gas are as shown in table 2；
The composition and calorific value of the high temperature pyrolysis oil gas of table 2
High temperature pyrolysis oil gas is supplied into the second energy-conservation deacidifying device carries out heat exchange and depickling treatment, to be lowered the temperature Oil gas is pyrolyzed after depickling；
Oil gas will be pyrolyzed after cooling depickling to supply to purifier and carry out purified treatment, to obtain pyrolysis oil and pyrolysis Gas, wherein pyrolysis oil are used for combustion power generation；
The combustion tail gas produced in pyrolysis tail gas and subsequent power generation unit are carried out using the second collecting carbonic anhydride unit Collecting carbonic anhydride, and carbon dioxide the second energy-conservation deacidifying device of feeding for obtaining will be trapped, using from high temperature pyrolysis oil gas The heat that accumulation of heat is obtained is preheated to the carbon dioxide, wherein, carbon dioxide is caught in the second collecting carbonic anhydride unit , up to more than 90%, the carbon dioxide purity that trapping is obtained is up to more than 98% for collection rate；
To be pyrolyzed the pyrolytic carbon particle that the pyrolytic carbon that obtains is broken for particle diameter not higher than 10mm, and with vapor, pyrolysis gas Supplied to gasification installation with the carbon dioxide after preheating, gasification reaction is carried out at normal pressure, 1200 DEG C, pyrolytic carbon is converted It is gasification gas, the conversion ratio of pyrolytic carbon is up to more than 98%, and the gasification gas composition and calorific value that gasification process is obtained are as shown in table 3, with Pyrolysis gas are compared, the CO in gasification gas gas2Content is reduced to 1.6v% by 32v%, and CO contents are promoted to by 9.7v% 65.9v%, calorific value is by 3962kcal/Nm3It is promoted to 6201.6kcal/Nm3, 74.2% is increased equivalent to pyrolysis gas yield；
The composition and calorific value of the gasification gas of table 3
The gasification gas that will be prepared in gasification installation is supplied into the first energy-conservation deacidifying device to be carried out at heat exchange and depickling Reason, to gasify gas after obtaining cooling depickling；
The gas that will gasify after cooling depickling is supplied to gasification gas clean unit and carries out purified treatment, to be purified gasification Gas；
By the part supply of purification gasification gas to the first collecting carbonic anhydride unit, to obtain first high-purity titanium dioxide Carbon gas and high heating value gasification gas, wherein, collecting carbonic anhydride rate is caught up to more than 90% in the first collecting carbonic anhydride unit The carbon dioxide purity that collection is obtained is up to more than 98%；
Part supply to the generator unit of high heating value gasification gas is carried out into combustion power generation, to obtain combustion tail gas, combustion Burn tail gas as shown in table 4 with the composition of domestic garbage pyrolysis tail gas；Meanwhile, another part of high heating value gasification gas is supplied to rotation Rotated bed pyrolysis oven is used as fuel.
The composition of the combustion tail gas of table 4 and pyrolysis tail gas
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (9)

1. it is a kind of process house refuse system, it is characterised in that including：
There is pretreatment unit, the pretreatment unit house refuse entrance, organic waste outlet and inorganic refuse to export；
Pyrolysis installation, the pyrolysis installation has organic waste entrance, high temperature pyrolysis oil gas vent, pyrolytic carbon outlet and pyrolysis tail Gas is exported, and the organic waste entrance is connected with organic waste outlet；
Breaker, the breaker has pyrolytic carbon entrance and a pyrolytic carbon particle outlet, the pyrolytic carbon entrance with it is described Pyrolytic carbon outlet is connected；
There is gasification installation, the gasification installation pyrolytic carbon particle entrance, steam entry, the outlet of gasification gas and residue after gasifying to go out Mouthful, the pyrolytic carbon particle entrance is connected with the pyrolytic carbon particle outlet；
First energy-conservation deacidifying device, gasification gas goes out after the first energy-conservation deacidifying device has gasification gas entrance and cooling depickling Mouthful, the gasification gas entrance is connected with the gasification gas outlet；
Gasification gas clean unit, the gasification gas clean unit goes out with gasification gas entrance after cooling depickling and purification gasification gas Mouthful, the gas entrance that gasifies after the cooling depickling is connected with gas outlet of gasifying after the cooling depickling；
First collecting carbonic anhydride unit, the first collecting carbonic anhydride unit has the first gas inlet, first high-purity two Carbon oxide gas are exported and high heating value gasification gas outlet, and first gas inlet is connected with purification gasification gas outlet；
Generator unit, the generator unit has fuel inlet and combustion tail gas outlet, the fuel inlet and the high heating value Gasification gas outlet is connected.
2. system according to claim 1, it is characterised in that further include：
Second energy-conservation deacidifying device, the second energy-conservation deacidifying device is pyrolyzed after having high temperature pyrolysis oil gas entrance and cooling depickling Oil gas vent, the high temperature pyrolysis oil gas entrance is connected with the high temperature pyrolysis oil gas vent；
Purifier, the purifier is pyrolyzed oil gas entrance, pyrolysis gas outlet and pyrolysis oil export, institute after having cooling depickling State cooling depickling after be pyrolyzed oil gas entrance with it is described cooling depickling after be pyrolyzed oil gas vent be connected, the pyrolysis gas outlet with it is described Gasification installation is connected, and the pyrolysis oil export is connected with the generator unit.
3. system according to claim 2, it is characterised in that further include：
Second collecting carbonic anhydride unit, the second collecting carbonic anhydride unit has the second gas inlet and second high-purity two Carbon oxide gas are exported, and second gas inlet is connected with the pyrolysis offgas outlet and combustion tail gas outlet respectively, The second high-purity carbon dioxide gas vent is connected with the second energy-conservation deacidifying device, and the second energy-conservation deacidifying device is also With carbon dioxide outlet after the second preheating, carbon dioxide outlet is connected with the gasification installation after second preheating.
4. system according to claim 3, it is characterised in that high heating value gasification gas outlet and the pyrolysis installation phase Even.
5. the system according to any one of Claims 1 to 4, it is characterised in that the pretreatment unit includes phase successively Broken bag mechanism even, roller screen mechanism, sorting mechanism and crushing mechanism.
6. the method that the system any one of a kind of use Claims 1 to 5 processes house refuse, it is characterised in that bag Include：
(1) house refuse is supplied into the pretreatment unit and is pre-processed, to obtain organic waste and inorganic refuse；
(2) supplying the organic waste carries out pyrolysis processing into the pyrolysis installation, to obtain high temperature pyrolysis oil air and heat Solution charcoal and pyrolysis tail gas；
(3) supplying the pyrolytic carbon carries out break process into the breaker, to obtain pyrolytic carbon particle；
(4) supplying the pyrolytic carbon particle and water vapour carries out gasification process into the gasification installation, to be gasified Gas and residue after gasifying；
(5) supplying into the first energy-conservation deacidifying device the gasification gas carries out heat exchange and depickling treatment, to be dropped Gasify gas after warm depickling；
(6) gas that will gasify after the cooling depickling is supplied and carries out purified treatment into the gasification gas clean unit, to obtain Purification gasification gas；
(7) it is high to obtain first by the part supply of the purification gasification gas to the first collecting carbonic anhydride unit Pure carbon dioxide gas and high heating value gasification gas；
(8) supplying high heating value gasification gas carries out combustion power generation into the generator unit, to obtain combustion tail gas.
7. method according to claim 6, it is characterised in that further include：
(9) supplying into the second energy-conservation deacidifying device the high temperature pyrolysis oil gas carries out heat exchange and depickling treatment, so as to Oil gas is pyrolyzed after obtaining cooling depickling；
(10) oil gas will be pyrolyzed after the cooling depickling to supply and carry out purified treatment into the purifier, to be pyrolyzed Oil and pyrolysis gas, and the pyrolysis gas are supplied into the gasification installation into step (4), the pyrolysis oil is supplied to step (8) generator unit in.
8. method according to claim 7, it is characterised in that further include：
(11) the pyrolysis tail gas and the combustion tail gas are supplied into the second collecting carbonic anhydride unit, to obtain Second high-purity carbon dioxide gas, and the second high-purity carbon dioxide gas is supplied into the second section into step (9) The pre-heat treatment can be carried out in deacidifying device, obtain carbon dioxide after the second preheating, and carbon dioxide after the described second preheating is supplied To the gasification installation in step (4).
9. method according to claim 8, it is characterised in that further include：
(12) another part of high heating value gasification gas is supplied into the pyrolysis installation into step (2) makes as fuel With.
CN201611153349.4A 2016-12-14 2016-12-14 The system and method for processing house refuse Pending CN106824974A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066690A (en) * 2019-05-30 2019-07-30 赫普能源环境科技有限公司 A kind of system and method for thermal power plant slightly burnt steam pyrolysis coal gas
CN111589844A (en) * 2020-05-29 2020-08-28 北京云水浩瑞环境科技有限公司 System and method for treating household garbage
CN112268279A (en) * 2020-10-15 2021-01-26 深圳市捷晶能源科技有限公司 Intelligent thermal cracking treatment method and system for slag-state solid waste

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110066690A (en) * 2019-05-30 2019-07-30 赫普能源环境科技有限公司 A kind of system and method for thermal power plant slightly burnt steam pyrolysis coal gas
CN111589844A (en) * 2020-05-29 2020-08-28 北京云水浩瑞环境科技有限公司 System and method for treating household garbage
CN112268279A (en) * 2020-10-15 2021-01-26 深圳市捷晶能源科技有限公司 Intelligent thermal cracking treatment method and system for slag-state solid waste

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